My AW has the pic rail mounted via the dove tail rail. The AI irons I have mount to the pic rail and to the brake. There is no dove tail on the brake. A bolt holds the sight to a beveled portion of the brake.
I'm not sure how well it would work as high as the AX rails are. Your best option would probably be to get a set of AR15 style sights and run them on the rails. I'm not sure why you would want iron sights though?